package com.mmall.service.impl;

import com.google.common.collect.Lists;
import com.mmall.service.IFileService;
import com.mmall.utill.FTPUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.util.UUID;

/**
 * Created by DongGang on 2017/7/30.
 */
@Service("iFileService")
public class FileServiceImpl implements IFileService {

    private Logger logger = LoggerFactory.getLogger(FileServiceImpl.class);

    public String upload(MultipartFile file,String path) {
        String fileName = file.getOriginalFilename();//拿到原始文件名
        //扩展名
        //abc.jpg
        String fileExtensionName = fileName.substring(fileName.lastIndexOf(".")+1);
        //上传文件的名字
        String uploadFileName = UUID.randomUUID().toString() + fileExtensionName;

        logger.info("开始上传文件,上传文件名:{},上传路径:{},新文件名:{}", fileName, path, uploadFileName);

        File fileDir = new File(path);
        if (!fileDir.exists()) {
            fileDir.setWritable(true);//赋文件可写
            fileDir.mkdirs();
        }
        File targetFile = new File(path, uploadFileName);

        try {
            file.transferTo(targetFile);
            //文件已经上传成功
            
            FTPUtil.uploadFile(Lists.newArrayList(targetFile));
            //已经上传到文件夹下


            // 上传完之后,删除upload下面的文件
            targetFile.delete();

        } catch (IOException e) {
            logger.error("上传文件异常",e);
            return null;
        }

        return targetFile.getName();
    }


}
